From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 7E8E4C282C1 for ; Fri, 28 Feb 2025 15:15:03 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 40AD510ECD4; Fri, 28 Feb 2025 15:15:03 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="F1MEUmNu"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.7]) by gabe.freedesktop.org (Postfix) with ESMTPS id AEB7410ECD2 for ; Fri, 28 Feb 2025 15:14:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1740755696; x=1772291696; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=y1ntYrvCVzoSMlPCq1tMwyJPBLIGNFuMVpTBH8HT8Ws=; b=F1MEUmNuhrkufEez5OKuC5Bz5/tvyn04d8G2yqkD9MpOz/+2lfwtltGd bXHynbwyUj6cITsqi7WJdL2ZTXkRG8S4B4xxl6j7sRVENs38DBBqyYb8h VJnQllzg1aRj3qh5UMKQ5N6N8tWs4OuU2ETfQJbR+RaYeArPXMFsMwn6k xlu33P6t55MgdJ9vebRkf2N0iKADGGTACQdX9MX4lUfmZXy/UdFtoT4wa mgJARBOSkhXeSSFhDIKJ5r268y6pSF78d4xErosDnZ0FNjRh6G8QE+WGs gLnfh/z670PQ02e9MHFyjOOVULk2RQ0+5ugecpVs4D6mSBbAp2OPK8O5b w==; X-CSE-ConnectionGUID: IUkQGizySTa9EN9GZ5EuSg== X-CSE-MsgGUID: ZJfLdvh3TOGHlnYhhuBbhQ== X-IronPort-AV: E=McAfee;i="6700,10204,11359"; a="67064333" X-IronPort-AV: E=Sophos;i="6.13,322,1732608000"; d="scan'208";a="67064333" Received: from orviesa009.jf.intel.com ([10.64.159.149]) by fmvoesa101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 28 Feb 2025 07:14:55 -0800 X-CSE-ConnectionGUID: 8P8lqXixSUqQkvrzaN1ylw== X-CSE-MsgGUID: HNt2TUP/ShakZtrnpvTvCA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.13,322,1732608000"; d="scan'208";a="117113411" Received: from szeng-desk.jf.intel.com ([10.165.21.160]) by orviesa009-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 28 Feb 2025 07:14:55 -0800 From: Oak Zeng To: intel-xe@lists.freedesktop.org Cc: Thomas.Hellstrom@linux.intel.com, matthew.brost@intel.com, jonathan.cavitt@intel.com Subject: [PATCH v7 1/3] drm/xe: Introduced needs_scratch bit in device descriptor Date: Fri, 28 Feb 2025 10:30:56 -0500 Message-Id: <20250228153058.1039188-2-oak.zeng@intel.com> X-Mailer: git-send-email 2.26.3 In-Reply-To: <20250228153058.1039188-1-oak.zeng@intel.com> References: <20250228153058.1039188-1-oak.zeng@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: intel-xe@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel Xe graphics driver List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-xe-bounces@lists.freedesktop.org Sender: "Intel-xe" On some platform, scratch page is needed for out of bound prefetch to work. Introduce a bit in device descriptor to specify whether this device needs scratch page to work. v2: introduce a needs_scratch bit in device info (Thomas, Jonathan) v3: drop NEEDS_SCRATCH macro (Matt) Signed-off-by: Oak Zeng Reviewed-by: Thomas Hellström --- drivers/gpu/drm/xe/xe_device_types.h | 2 ++ drivers/gpu/drm/xe/xe_pci.c | 5 +++++ 2 files changed, 7 insertions(+) diff --git a/drivers/gpu/drm/xe/xe_device_types.h b/drivers/gpu/drm/xe/xe_device_types.h index 833c29fed3a3..94cc93314972 100644 --- a/drivers/gpu/drm/xe/xe_device_types.h +++ b/drivers/gpu/drm/xe/xe_device_types.h @@ -318,6 +318,8 @@ struct xe_device { u8 has_usm:1; /** @info.is_dgfx: is discrete device */ u8 is_dgfx:1; + /** @info.needs_scratch: needs scratch page for oob prefetch to work */ + u8 needs_scratch:1; /** * @info.probe_display: Probe display hardware. If set to * false, the driver will behave as if there is no display diff --git a/drivers/gpu/drm/xe/xe_pci.c b/drivers/gpu/drm/xe/xe_pci.c index 6b5fa067b39b..3e3b1cea9bce 100644 --- a/drivers/gpu/drm/xe/xe_pci.c +++ b/drivers/gpu/drm/xe/xe_pci.c @@ -67,6 +67,7 @@ struct xe_device_desc { u8 has_llc:1; u8 has_pxp:1; u8 has_sriov:1; + u8 needs_scratch:1; u8 skip_guc_pc:1; u8 skip_mtcfg:1; u8 skip_pcode:1; @@ -353,6 +354,7 @@ static const struct xe_device_desc lnl_desc = { .dma_mask_size = 46, .has_display = true, .has_pxp = true, + .needs_scratch = true, }; static const struct xe_device_desc bmg_desc = { @@ -361,6 +363,7 @@ static const struct xe_device_desc bmg_desc = { .dma_mask_size = 46, .has_display = true, .has_heci_cscfi = 1, + .needs_scratch = true, }; static const struct xe_device_desc ptl_desc = { @@ -369,6 +372,7 @@ static const struct xe_device_desc ptl_desc = { .has_display = true, .has_sriov = true, .require_force_probe = true, + .needs_scratch = true, }; #undef PLATFORM @@ -644,6 +648,7 @@ static int xe_info_init_early(struct xe_device *xe, xe->info.skip_guc_pc = desc->skip_guc_pc; xe->info.skip_mtcfg = desc->skip_mtcfg; xe->info.skip_pcode = desc->skip_pcode; + xe->info.needs_scratch = desc->needs_scratch; xe->info.probe_display = IS_ENABLED(CONFIG_DRM_XE_DISPLAY) && xe_modparam.probe_display && -- 2.26.3